What Is Hora?
Hora (called Horai in Tamil) splits every day into 24 planetary hours. Each one is ruled by a planet, and that planet colours whatever you start in it.
It's the quick tool people reach for when there's no time to fix a full muhurtham. Need to sign something this afternoon? Pick a Jupiter or Venus hora and you're set.
The word comes from Ahoratra, meaning day and night. Drop the first and last syllables and you get Hora.